My experience with Traxxas servos has been spotty although others have better luck. The second servo could be faulty, Traxxas quality could have slipped over the past 9+ years. Do the rudder and pushrod move smoothly? Years of heavy abuse could have bent something. The 2080 is a microservo so is pretty delicate. Bashing around on the snow can result in hitting the rudder on hardpack and bending something or breaking the gears. Maybe a more robust replacement servo is in order.
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